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Copper C110, also called electrolytic tough pitch (ETP) copper, is high-conductivity copper with a purity of at least 99.9%. Its electrical and thermal conductivity are second only to silver, so it is the natural choice for parts that must carry current or move heat away quickly and reliably.
It is ductile, solders and brazes easily and resists corrosion in most atmospheres, though ammonia is best avoided. Typical CNC machined copper parts include busbars, electrical contacts, heat sinks, shielding components and mould inserts. Copper is soft and much slower to machine than brass, which is reflected in cost.
We CNC mill and turn C110 from bar and plate. A note for UK buyers: US C110 matches British C101 (CW004A), while the British C110 code means oxygen-free copper, so please state the standard on your drawing. Get an instant quote for C110 copper parts, with delivery anywhere in the UK.
Material
Copper C110
Description
Strengths
Lead time 10 business days. Outstanding electrical and thermal conductivity, second only to silver, with good ductility, corrosion resistance and solderability.
Weaknesses
Low strength; much slower to machine than brass
Copper
Ultimate tensile strength
200–360 MPa
Yield strength
50–340 MPa
Modulus of elasticity
117 GPa
Elongation at break
5–50%
Density
8.96 g/cm³
Hardness
40–110 HV
Corrosion resistance
Good to excellent (avoid ammonia)
Melting point
1084.5°C
UK equivalent
US UNS C11000 = UK C101 / CW004A (Cu-ETP)
Maximum service temperature
Not specified
Thermal expansion coefficient
16.9 × 10⁻⁶ /K
Thermal conductivity
391 W/(m·K)
Electrical conductivity
101.5% IACS
Electrical resistivity
1.71 μΩ·cm
Machinability
Rating 20 (C360/CZ121 brass = 100)
Joining
Soldering excellent; brazing good
Busbars & electrical contacts
Heat sinks & thermal parts
RF & cable shielding parts
Mould inserts
Values shown are typical supplier figures for Copper C110 and may vary with stock condition. Please confirm critical properties before production.
Copper C110 is soft and ductile, so it is much slower to machine than brass, with a machinability rating of about 20 compared with 100 for C360 brass. Sharp tools and care with burrs give the best results.
Being soft, thin features and burr-free edges need extra care. Achievable tolerances depend on part size, geometry and features, so mark any critical tolerances on a 2D drawing with your upload and they will be reviewed and confirmed in your quote.
Copper is usually supplied as machined or polished and can be plated. It solders very well and brazes well. The UK equivalent is C101 (CW004A).
Typical uses include busbars and electrical contacts, heat sinks and thermal parts, RF and cable shielding parts, and mould inserts.
Copper has much higher thermal conductivity than aluminium, but it is heavier and slower to machine. Aluminium 6063 or 6061 is often a lighter, more economical option; choose copper where maximum heat transfer is needed.
The typical lead time shown for copper C110 is 10 business days from an approved order. Quantity, finishing and any heat treatment can affect this, and your quote confirms the date before you order.
Parts in as fast as 10 business days
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